diff --git a/deployment/data-model-test.nix b/deployment/data-model-test.nix
index 541abed5..42b77285 100644
--- a/deployment/data-model-test.nix
+++ b/deployment/data-model-test.nix
@@ -131,7 +131,6 @@ in
                   _class = "fediversity-environment";
                   resources.shell.login-shell.username = "operator";
                   implementation =
-                    _requests:
                     { ... }:
                     # { providers, ... }:
                     {
diff --git a/deployment/data-model.nix b/deployment/data-model.nix
index d31c4efa..3e8ea8a2 100644
--- a/deployment/data-model.nix
+++ b/deployment/data-model.nix
@@ -138,7 +138,7 @@ in
               };
               implementation = mkOption {
                 description = "Mapping of resources required by applications to available resources; the result can be deployed";
-                type = environment.config.resource-mapping.function-type;
+                # type = environment.config.resource-mapping.output-type;
               };
               resource-mapping = mkOption {
                 description = "Function type for the mapping from resources to a (NixOps4) deployment";
@@ -159,15 +159,7 @@ in
                   modules = [ environment.config.resource-mapping.output-type ];
                 });
                 readOnly = true;
-                default =
-                  cfg:
-                  # TODO: check cfg.enable.true
-                  let
-                    required-resources = lib.mapAttrs (
-                      name: application-settings: config.applications.${name}.resources application-settings
-                    ) cfg.applications;
-                  in
-                  (environment.config.implementation required-resources).output;
+                default = _cfg: environment.config.implementation;
 
               };
             };